If it doesn't specifically list .mkv as a viable format for play back,.... then I would have to say it won't play them. Trying them in a player would then be the only way to know for sure,..... You could copy some to a disc and try them in a friends player,... or take them to the store that carries the player you want.
Right now,... I do know the new Oppo player will handle the .mkv files.
See here.
https://forum.blu-ray.com/showpost.p...43&postcount=1